1. Fish by - products

2. Isinglass
Isinglass
A transparent, almost pure gelatin prepared from the air bladder of the sturgeon and certain other fishes and used as an adhesive and a clarifying agent.

3. Shark leather
Skins of shark can be processed into fine leather suitable for manufacture of fancy items.
The main component of skin is collagen.
Both demersal as well as pelagic varieties are suitable for the leather production.
Shark skin has a protective coating of a calcareous deposit known as shagreen.
Removal of shagreen is necessary as it makes the leather rough.

4. Fish glue
Fish gelatin and fish glue are more or less same and can be prepared from fish skin and fish head.
If required, fish skin can be preserved by salting and drying before processing into glue however, fish head should be processed fresh.

5. Pearl essence
Pearl essence is the suspension of crystalline guanine in water or organic solvent.
Guanine is an iridescent material found in the epidermal layers and scales of most pelagic species of fish like oil sardine, mackerel, herring etc. When guanine particles are deposited on the inside surface of solid beads, an optical effect similar to that of real pearl is obtained.

6. Beche de mer
This is a product processed out of marine animal called sea cucumber belonging to class Holothuria which inhabits in tropical and temperate waters especially in Indo pacific regions.